forked from flashcat/categraf
102 lines
2.6 KiB
Markdown
102 lines
2.6 KiB
Markdown
## cadvisor
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cadvisor 采集插件， 采集cadvisor 数据，如果是通过kubelet采集，可以附加pod的label和annotation
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## Configuration
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```toml
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# # collect interval
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# interval = 15
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[[instances]]
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# 填写kubelet的ip和port
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url = "https://1.2.3.4:10250/metrics/cadvisor"
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# 如果path为空, 会自动补齐为/metrics/cadvisor
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# url = "https://1.2.3.4:10250"
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# 如果是通过kubelet采集，可以附加pod的label和annotation
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type = "kubelet"
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# 直接采集cadvisor , type 设置为cadvisor
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#url = "http://1.2.3.4:8080/metrics"
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#type = "cadvisor"
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# url_label_key 和 url_label_value 用法参加下面说明
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url_label_key = "instance"
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url_label_value = "{{.Host}}"
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# # 认证的token 或者token file
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#bearer_token_string = "eyJhblonglongXXX.eyJplonglongYYY.oQsXlonglongZ-Z-Z"
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bearer_token_file = "/path/to/token/file"
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# 需要忽略的label key
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ignore_label_keys = ["id","name", "container_label*"]
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# 只采集那些label key, 建议保持为空，采集所有的label。 优先级高于ignore_label_keys。
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#choose_label_keys = ["*"]
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timeout = "3s"
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# # Optional TLS Config
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# # 想跳过自签证书，use_tls 记得要配置为true
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use_tls = true
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# tls_min_version = "1.2"
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# tls_ca = "/etc/categraf/ca.pem"
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# tls_cert = "/etc/categraf/cert.pem"
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# tls_key = "/etc/categraf/key.pem"
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## Use TLS but skip chain & host verification
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insecure_skip_verify = true
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```
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## url_label_key 和 url_label_value 用法
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```toml
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# 从URL中提取Host部分，放到instance label中
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# 假设 url =https://1.2.3.4:10250/metrics/cadvisor
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# 最终附加的label为 instance=1.2.3.4:10250
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url_label_key = "instance"
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url_label_value = "{{.Host}}"
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```
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如果 scheme 部分和 path 部分都想取，可以这么写：
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```toml
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url_label_value = "{{.Scheme}}://{{.Host}}{{.Path}}"
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```
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相关变量是用这个方法生成的，供大家参考：
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```go
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func (ul *UrlLabel) GenerateLabel(u *url.URL) (string, string, error) {
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if ul.LabelValue == "" {
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return ul.LabelKey, u.String(), nil
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}
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dict := map[string]string{
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"Scheme": u.Scheme,
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"Host": u.Host,
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"Hostname": u.Hostname(),
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"Port": u.Port(),
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"Path": u.Path,
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"Query": u.RawQuery,
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"Fragment": u.Fragment,
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}
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var buffer bytes.Buffer
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err := ul.LabelValueTpl.Execute(&buffer, dict)
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if err != nil {
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return "", "", err
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}
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return ul.LabelKey, buffer.String(), nil
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}
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```
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以 `http://1.2.3.4:8080/search?q=keyword#results` 为例, 变量及其值如下:
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|variable|value|
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|---|---|
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|{{.Scheme}}|http|
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|{{.Host}} |1.2.3.4:8080|
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|{{.Hostname}}|1.2.3.4|
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|{{.Port}}|8080|
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|{{.Path}}|search|
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|{{.Query}}|q=keyword|
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|{{.Fragment}}| results| |